1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4261836cdef9f21781ad7d02e4b7d33fd91de5f59d7c33f0c72f1acdf06f40d6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2140d94f-f8b5-4944-b78d-6ece11992e9b.json and https://artists.proofprofile.net/proofs/artist/2140d94f-f8b5-4944-b78d-6ece11992e9b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1a38a6fd6cdcbe7c04f560eb0d2ed9afe792db9be6a5847b175ce407e7ec9f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES11D2300835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d69dd5ee7c1a3b4275b9187e97bfc835526bcdf78130aae52ae404142385161. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES11D2300833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a44b9f559998785f66cf72ac086d97d59797eea78f3b8cdd629b2557299b49. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES11D2200823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef33ec7a9bc9ffb8337b07f9883ca76fb9b6af4f8491ed67aa15591d0be5d2b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES11D2300840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9588f4e2cb9e37051769dcbd42cbb824d186199872b34d7e8ae567e4752d71af. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES11D2300837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7250ac0127002c57930d204391a6f99e77b45818da3a5fc368ec0fb3cce17a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES11D2300836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896a2c5374cb685c61323db907df0925b31a3ef6afa7ffbc1ff63dc3ac07dcdc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES11D2300834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a239939f3dec335c77b8a7540802c11dd9b25609d44be51c32f4166eefc54b4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES11D2300838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914f360210bdae7101fcc747cfa0e86cf8fc85078091d85cb8a7c84679726007. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES11D2200824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909895088741b2370cc2bf1b140427e0f637c90ee347c7339ebcedbc79f03dd9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES11D2300841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa668127e59a2115b6c7276cf47fab9bdb35efa06eaff45df17f3cb1514d55f8d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES11D2300842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe2e705318ab246448037f47a7f04a42744690124d3170a189a882659f285c1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES11D2300843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cd4bb488c572a33ed734d97dfa433f8ba93e4a07b453c36d0d0ba5dea5e20f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES11D2301037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ff89bb97212c7970fb7f6da3d7260aaf68bf3517a159595a2ad006e2ab836a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES11D2301040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca952051f6623317979ed20c33114125219580dd62d0068f5b8fb203154bb7c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES11D2301042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ca2e2094361a74e0b0263fa656bdeceed29a75631b3ec6f99d283ae733a368. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA62536242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1000e9485c3d226cba6ed46e8c6c09f930a09cfa4e72797a43cbc2afbf6de86b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:19:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA62536246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72f5b640ae4326dd30104123b58eb579e9b7da706810c835e916f6802b399c8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA62536238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d5e92f792a87a82af08d37b8dd4d6b3724cbed8c922faaf96252f6cfefd60a. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA62536247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ca2e2094361a74e0b0263fa656bdeceed29a75631b3ec6f99d283ae733a368. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA62536242.
Memòria sobre la necessitat d’entrar en una fase de relaxació de consciència absoluta…
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027e721b42878c7c5e7a03cece1c44a9deb2bf8221b3f0b39511066602ceaed1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA62536248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7d9fabe0355ca8632ffc67dac7e78a870d9b23c4df8e6a19118c4ecd36da3a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA62536243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d30a1b86293154ef0e8db33092011ed83b1efa2d3834655d0f6956a6f02582. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA62536249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb5994484c39fa1847042d72125071124f3e4cba79c05ab35762898b185f455. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA62536250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18c26393a56281041e7c474b511fd41fb7b900f9406f9653ebaef61a3dd3cf0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA62536244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6683b6a84813765ddd86465c554d3b93c481b98e5219ccba0813ff786ae0b273. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G2401391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e5e1da8e963cf33b2c585dc5b32cc2fa36a4bdad43eb55331e697edd933fba. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES51G2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4241abc5ee32d21a95b1ccce8673d17d1915b0968a4c05b2cfdeb67da9f9af48. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5062411401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc4429085e6524edffe725c4d3cf37c74dd3b5a44cab4acafb4b9ae0cdd5a89. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T16:23:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES84D2300063.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch